On Fri, Mar 26, 2010 at 11:53 AM, Boris Epstein <borepstein at gmail.com> wrote: > Hi all, > > I've got a CentOS 5.4 box and am trying to use it to control either > of the two old cameras we've got, one being Nikon Coolpix 990 and the > other Nikon Coolpix 995. Accessing either I get the following message: > > ---------------------------------------------------- > *** Error *** > An error occurred in the io-library ('Could not claim the USB > device'): Could not claim interface 0 (Operation not permitted). Make > sure no other program or kernel module (such as sdc2xx, stv680, > spca50x) is using the device and you have read/write access to the > device. > ERROR: Could not capture. > *** Error (-53: 'Could not claim the USB device') *** > ---------------------------------------------------- > > Any idea what this could be about? > > By the way, about a year ago I did manage to use a Linux machine to > control one of these cameras (the 990, I believe). Is the camera set to the PTP mode? Try running 'tail -f /var/log/messages' while connecting the camera and see how it is being recognized. Akemi